Vibration Driving Apparatus

This application claims the benefit of and priority to Korea Patent Application No. 10-2024-0182079 filed on Dec. 9, 2024, the entire contents of which are incorporated herein by reference for all purposes.

The present disclosure relates to a vibration driving apparatus.

An apparatus such as a display apparatus must install a separate speaker to provide sound. When a speaker is disposed on a display apparatus, since the speaker occupies a space, a problem occurs in that the design and space arrangement of the display device are restricted.

Since the sound output from the speaker travels backward or downward of the apparatus, there is a problem of poor sound quality due to interference between sounds reflected from the wall or the ground.

The description of the related art should not be assumed to be prior art merely because it is mentioned in or associated with this section. The description of the related art includes information that describes one or more aspects of the subject technology, and the description in this section does not limit the invention.

The inventors of the present disclosure have conducted several experiments to realize an apparatus capable of recognizing above-mentioned problems, improving sound quality, and having reliability. Through several experiments, a vibration driving apparatus having a new structure capable of improving sound quality and improving reliability has been invented.

According to the embodiment of this disclosure, a vibration driving apparatus including a vibration apparatus that is configured on the rear surface of the vibration member, can generate sound by vibrating the vibration member, and can improve sound pressure characteristics.

Additional advantages and features of the disclosure will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or can be learned from practice of the disclosure. The objectives and other advantages of the disclosure can be realized and attained by the structure particularly pointed out in the written description as well as the appended drawings.

To achieve these and other embodiments of the inventive concepts, as embodied and broadly described herein, a vibration driving apparatus may comprise a vibration member, and a vibration apparatus configured to vibrate the vibration member. The vibration apparatus may comprise a sound generating module, a vibration module connected to the sound generating module, and a spring member between the sound generating module and the vibration module.

According to one or more embodiments of the present disclosure, a vibration driving apparatus may vibrate the vibration member by configuring the vibration apparatus on the rear surface of the vibration member, and sound may be generated to the front surface of the vibration driving apparatus.

According to one or more embodiments of the present disclosure, the vibration driving apparatus includes a sound generating module and a vibration apparatus in which the vibration module is integrated, and thus, acoustic characteristics and/or sound pressure characteristics of the mid-low range and mid-high range may be improved.

According to one or more embodiments of the present disclosure, the vibration driving apparatus may implement stable acoustic and/or sound pressure characteristics by forming a spring member between the sound generating module and the vibration module.

According to one or more embodiments of the present disclosure, the vibration driving apparatus includes a sound generating module and a vibration apparatus in which the vibration module is integrated, and thus, the vibration driving apparatus has an effect of uni-materialization.

According to one or more embodiments of the present disclosure, the vibration driving apparatus may simplify the structure of the vibration driving apparatus and reduce manufacturing costs by including a sound generating module and a vibration apparatus in which the vibration module is integrated.

Other systems, methods, features and embodiments will be, or will become, apparent to one with skill in the art upon examination of the following figures and detailed description. It is intended that all such additional systems, methods, features and embodiments be included within this description, be within the scope of the present disclosure, and be protected by the following claims. Nothing in this section should be taken as a limitation on those claims. Further embodiments and features are discussed below in conjunction with embodiments of the disclosure.

It is to be understood that both the foregoing description and the following description of the present disclosure are examples, and are intended to provide further explanation of the disclosure as claimed.

Throughout the drawings and the detailed description, unless otherwise described, the same drawing reference numerals should be understood to refer to the same elements, features, and structures. The sizes, lengths, and thicknesses of layers, regions and elements, and depiction thereof may be exaggerated for clarity, illustration, and/or convenience.

Reference will now be made in detail to the exemplary embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

Advantages and features of the present disclosure, and implementation methods thereof will be clarified through following embodiments described with reference to the accompanying drawings. The present disclosure can, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

A shape, a size, a ratio, an angle, and a number disclosed in the drawings for describing embodiments of the present disclosure are merely an example, and thus, the present disclosure is not limited to the illustrated details. Like reference numerals refer to like elements throughout. In the following description, when the detailed description of the relevant known function or configuration is determined to unnecessarily obscure the important point of the present disclosure, the detailed description will be omitted. When “comprise,” “have,” and “include” described in the present disclosure are used, another part can be added unless “only” is used. The terms of a singular form can include plural forms unless referred to the contrary. For example, an element may be one or more elements. An element may include a plurality of elements. The word “exemplary” is used to mean serving as an example or illustration. The term “the embodiment” may refer to “an embodiment” and vice versa. Embodiments are example embodiments. Aspects are example aspects. In one or more implementations, “embodiments,” “examples,” “aspects,” and the like should not be construed to be preferred or advantageous over other implementations. An embodiment, an example, an example embodiment, an aspect, the embodiment, the example, the example embodiment, the aspect, or the like may refer to one or more embodiments, one or more examples, one or more example embodiments, one or more aspects, or the like, unless stated otherwise.

In construing an element, the element is construed as including an error or tolerance range although there is no explicit description of such an error or tolerance range.

In describing a position relationship, for example, when a position relation between two parts is described as, for example, “on,” “over,” “under,” and “next,” one or more other parts can be disposed between the two parts unless a more limiting term, such as “just” or “direct (ly)” is used.

In describing a time relationship, for example, when the temporal order is described as, for example, “after,” “subsequent,” “next,” and “before,” a case that is not continuous can be included unless a more limiting term, such as “just,” “immediate(ly),” or “direct(ly)” is used.

It will be understood that, although the terms “first,” “second,” etc. can be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another and may not define order of sequence. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present disclosure.

In describing elements of the present disclosure, the terms “first,” “second,” “A,” “B,” “(a),” “(b),” etc. can be used. These terms are intended to identify the corresponding elements from the other elements, and basis, order, or number of the corresponding elements should not be limited by these terms. The expression that an element is “connected,” “coupled,” or “adhered” to another element or layer should be understood the element or layer cannot only be directly connected or adhered to another element or layer, but also be indirectly connected or adhered to another element or layer with one or more intervening elements or layers “disposed,” or “interposed” between the elements or layers, unless otherwise specified.

The term “at least one” should be understood as including any and all combinations of one or more of the associated listed items. For example, the meaning of “at least one of a first item, a second item, and a third item” denotes the combination of all items proposed from two or more of the first item, the second item, and the third item as well as the first item, the second item, or the third item. Also, the term “can” used herein includes all meanings and definitions of the word “may”.

Features of various embodiments of the present disclosure can be partially or overall coupled to or combined with each other, and can be variously inter-operated with each other and driven technically as those skilled in the art can sufficiently understand. The embodiments of the present disclosure can be carried out independently from each other, or can be carried out together in co-dependent relationship.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

1 FIG. 2 FIG. 3 FIG. 2 FIG. 4 FIG. 3 FIG. is a diagram illustrating a vibration driving apparatus according to an embodiment of the present disclosure.is a diagram illustrating a vibration driving apparatus according to an embodiment of the present disclosure.is a cross-sectional view taken along line I-I′ shown inaccording to an embodiment of the present disclosure.is a cross-sectional view of the vibration apparatus shown inaccording to an embodiment of the present disclosure.

1 4 FIGS.to 10 100 300 500 700 Referring to, a vibration driving apparatusaccording to an embodiment of the present disclosure may include a vibration member, a rear cover, a vibration apparatus, and a middle frame.

100 500 100 500 100 The vibration membermay vibrate according to the driving of at least one vibration apparatuswhile displaying an image, thereby outputting sound (PVS) (or panel vibration sound) in the forward direction (FD). The vibration membermay vibrate according to the driving of at least one vibration apparatuswithout displaying an image, outputting sound (PVS) in the forward direction (FD). Accordingly, the vibration memberaccording to the present disclosure may simultaneously display an image and generate (or output) sound (PVS).

100 110 130 The vibration membermay include a display paneland a functional film.

110 110 110 110 110 The display panelmay display an image. For example, the image may include an electronic image or a digital image. For example, the display panelmay output light to display an image. The display panelmay be any type of display panel or curved display panel such as a liquid crystal display panel, an organic light emitting display panel, a quantum dot light emitting display panel, a micro light emitting diode display panel, and an electrophoretic display panel. The display panelmay be a flexible display panel. For example, the display panelmay be a flexible light emitting display panel, a flexible electrophoretic display panel, a flexible electronic wet display panel, a flexible micro light emitting diode display panel, or a flexible quantum dot light emitting display panel, but is not limited thereto.

110 500 110 100 100 The display panelvibrates according to a vibration of the vibration apparatusto directly output the sound PVS to the front FD, and thus, the display panelmay be a diaphragm or a speaker that directly generates the sound PVS. For example, when the vibration membergenerates the sound PVS, the vibration membermay be a diaphragm, a panel speaker, or a flat speaker that directly generates the sound PVS.

110 110 110 According to an embodiment of the present disclosure, the display panelmay include a pixel circuit disposed on a substrate (or a base substrate), and a pixel array layer (or a display area) connected to the pixel circuit and having an anode electrode, a cathode electrode, and a light emitting layer. The anode electrode may be a first electrode, a pixel electrode, or the like, but is not limited thereto. The cathode electrode may be a second electrode, a common electrode, or the like, but is not limited thereto. The display panelmay display an image in the form of a top emission type, a bottom emission type, or a dual emission type according to a structure of the pixel array layer. The top emission type may display an image by emitting visible light generated from the pixel array layer to the front of the substrate of the display panel. The bottom emission type may display an image by emitting visible light generated from the pixel array layer to the outside through the substrate.

110 According to an embodiment of the present disclosure, the display panelmay include a pixel array unit disposed in a pixel area formed by a plurality of gate lines and/or a plurality of data lines. The pixel array unit may include a plurality of pixels that display an image according to a signal supplied to the signal lines. The signal lines may include a gate line, a data line, a pixel driving power line, and the like.

Each of the plurality of pixels may include a pixel circuit layer including a driving thin film transistor provided in the pixel area, an anode electrode electrically connected to the driving thin film transistor, a light emitting layer formed on the anode electrode, and a cathode electrode electrically connected to the light emitting layer.

The driving thin film transistor may be configured in a transistor region of each pixel region disposed on the substrate. The driving thin film transistor may include a gate electrode, a gate insulating layer, an active layer, a source electrode, and a drain electrode. The active layer of the thin film transistor may include silicon such as a-Si, poly-Si, or low temperature poly-Si, or may include an oxide such as indium-galium-Zinc-Oxide (IGZO), but is not limited thereto.

The anode electrode may be provided in an opening area disposed in each pixel area to be electrically connected to the driving thin film transistor.

The light emitting layer according to the embodiment of the present disclosure may include an organic light emitting device formed on an anode electrode. The organic light emitting device may be implemented to emit light of the same color for each pixel, for example, white, or may be implemented to emit light of one or more of different colors, for example, red, green, and blue for each pixel.

The light emitting layer according to another embodiment may include a micro light emitting diode device electrically connected to each of an anode electrode and a cathode electrode. The micro light emitting diode device is a light emitting diode implemented in the form of an integrated circuit (IC) or a chip, and may include a first terminal electrically connected to the anode electrode and a second terminal electrically connected to the cathode electrode. The cathode electrode may be commonly connected to the light emitting element of the light emitting layer provided in each pixel area.

Since the encapsulation portion is formed on the substrate to surround the pixel array part, oxygen or moisture may be prevented from penetrating into the light emitting layer of the pixel array area. The encapsulation portion according to an embodiment may be formed in a multilayer structure in which organic material layers and inorganic material layers are alternately stacked, but is not limited thereto. The inorganic material layer may block oxygen or moisture from penetrating into the light emitting device layer of the pixel array area. The organic material layer may be formed to have a relatively thicker thickness than the inorganic material layer so as to cover particles (or foreign substances) that may occur during the manufacturing process. The encapsulation portion may include a first inorganic layer, an organic layer on the first inorganic layer, and a second inorganic layer on the organic layer. The organic layer may be a particle cover layer. The touch panel may be disposed on the encapsulation portion or on the rear surface of the pixel array area.

110 According to an embodiment of the present disclosure, the display panelmay include an upper substrate, a lower substrate, and a liquid crystal layer. The upper substrate is a first substrate or a thin film transistor array substrate, and may include a pixel array (or a display portion or a display area) having a plurality of pixels formed in a pixel area intersected by a plurality of gate lines and/or a plurality of data lines. Each of the plurality of pixels may include a thin film transistor connected to a gate line and/or a data line, a pixel electrode connected to the thin film transistor, and a common electrode formed to be adjacent to the pixel electrode to supply a common voltage.

The upper substrate may further include a pad portion provided at the first edge (or first non-display area) and a gate driving circuit provided at the second edge (or second non-display area).

The pad portion may supply a signal supplied from the outside to the pixel array and/or the gate driving circuit. For example, the pad portion may include a plurality of data pads connected to the plurality of data lines through a plurality of data link lines and/or a plurality of gate input pads connected to the gate driving circuit through a gate control signal line. For example, the size of the upper substrate may be larger than that of the lower substrate, but is not limited thereto.

The gate driving circuit may be embedded (or integrated) in the second edge of the upper substrate to be connected to a plurality of gate lines. For example, the gate driving circuit may be implemented as a shift register including a transistor formed by the same process as the thin film transistor provided in the pixel area. The gate driving circuit according to another embodiment may be implemented in the form of an integrated circuit without being embedded in the upper substrate and included in the panel driving circuit.

The lower substrate may be a second substrate or a color filter array substrate. The lower substrate may include a pixel pattern including an opening area overlapping a pixel area formed in the upper substrate, and a color filter layer formed in the opening area. The lower substrate may have a size smaller than that of the upper substrate, but is not limited thereto. For example, the lower substrate may overlap the remaining portions except for the first edge of the upper substrate. The lower substrate may be bonded to the remaining portions except for the first edge of the upper substrate by a sealant with a liquid crystal layer interposed therebetween.

The liquid crystal layer may be interposed between the upper substrate and the lower substrate. The liquid crystal layer may be formed of a liquid crystal in which the arrangement direction of the liquid crystal molecules is changed according to a data voltage applied to the pixel electrode for each pixel and an electric field formed by the common voltage.

110 According to an embodiment of present disclosure, the display panelmay display an image according to light passing through the liquid crystal layer by driving the liquid crystal layer according to the data voltage applied for each pixel and the electric field formed for each pixel by the common voltage.

110 110 110 110 In the display panel, an upper substrate may be a color filter array substrate, and a lower substrate may be a thin film transistor array substrate. For example, the display panelaccording to another embodiment of the present disclosure may have a shape in which the display panelaccording to an embodiment of the present disclosure is inverted vertically. In this case, the pad portion of the display panelaccording to another embodiment of the present disclosure may be covered by a separate structure.

110 The display panelmay include a bending portion that is bent or curved to have a curved shape or a constant radius of curvature.

110 110 110 110 110 The bending portion of the display panelmay be implemented on at least one of one edge portion and the other edge parallel to each other in the display panel. One edge and/or the other edge of the display panelimplementing the bending portion may include only the non-display area, or may include an edge of the display area and the non-display area. For example, the display panelincluding a bending portion implemented by bending of the non-display area may have a one-sided bezel bending structure or a two-sided bezel bending structure. In addition, the display panelincluding a bending portion implemented by bending of the edge of the display area and the non-display area may have a one-sided active bending structure or a two-sided active bending structure.

130 110 130 110 130 110 The functional filmmay be disposed or configured on the display panel. The functional filmmay be disposed or configured on a second surface different from the first surface of the display panel. The functional filmmay be attached onto the display panelvia a transparent adhesive member. For example, the adhesive member may include a pressure sensitive adhesive PSA, an optical clear adhesive OCA, or an optical clear resin OCR, but is not limited thereto.

130 110 110 According to an embodiment of the present disclosure, the functional filmmay include an anti-reflection layer (or an anti-reflection film) for improving outdoor visibility and contrast ratio of an image displayed on the display panelby preventing reflection of external light. For example, the anti-reflection layer may include a circular polarization layer (or a circular polarization film) that blocks the reflected light reflected by the thin film transistor and/or lines disposed on the pixel array layer of the display panelfrom traveling to the outside.

130 110 The functional filmmay further include an optical path control layer (or an optical path control film) that controls a path of light emitted from the pixel array layer of the display panelto the outside. The optical path control layer may include a structure in which high and low refractive layers are alternately stacked. Accordingly, it is possible to minimize a color shift phenomenon according to a viewing angle by changing the path of light incident from the pixel array layer. For example, the low refractive layer may be disposed on the uppermost layer of the optical path control layer, but is not limited thereto.

100 110 130 110 According to an embodiment of the present disclosure, the vibration membermay further include a touch electrode portion for a user interface using a user touch. The touch electrode portion may be interposed between the display paneland the functional filmor may be embedded in the display panelaccording to an in-cell touch method. For example, the touch electrode portion according to the in-cell touch type may include touch electrodes of a mutual capacitance type or touch electrodes of a self-capacitance type.

10 300 300 100 300 100 300 500 500 According to an embodiment of the present disclosure, the vibration driving apparatusmay further include a cover member. The cover membermay be disposed on a rear surface of the vibration member. The cover membermay support the vibration member. For example, the cover membermay be connected to the vibration apparatusto support or fix the vibration apparatus.

300 300 100 100 The cover membermay be represented by a cover bottom, a plate bottom, a back cover, a set cover, a back cover, a rear frame, a base frame, a metal frame, a metal chassis, a chassis base, a chassis base, a chassis, an m-chassis, etc. Accordingly, the cover membermay be implemented as any type of frame or plate-shaped structure disposed on the rear surface of the vibration member. The rear surface of the vibration membermay be represented by one surface, a first surface, a rear surface, a lower surface, etc., but is not limited thereto.

300 310 350 According to an embodiment of the present disclosure, the cover membermay include a first cover memberand a second cover member.

310 100 310 100 310 100 310 300 310 310 The first cover membermay be disposed on the rear surface of the vibration member. The first cover membermay be spaced apart from the rear surface of the vibration memberwith the gap space GS interposed therebetween. The first cover membermay protect the rear surface of the vibration memberfrom an external impact. The first cover membermay reinforce the rigidity of the cover memberand perform a heat dissipation function. For example, the first cover membermay be an inner plate, a rigid plate, or a heat dissipation plate (or heat sink). For example, the first cover membermay be formed of a glass material, a metal material, or a plastic material. For example, the glass material may have one or more of sapphire glass and gorilla glass, or a stacked structure (or a bonded structure) thereof. For example, the metal material may have one or more of aluminum, an aluminum alloy, an alloy of iron and nickel, and stainless steel, or a bonded structure thereof.

350 310 350 310 350 310 350 350 310 350 310 310 500 10 310 350 The second cover membermay be disposed on the rear surface of the first cover member. For example, the second cover membermay cover the rear surface of the first cover member. The second cover membermay be a plate-shaped member that covers the entire rear surface of the first cover member. For example, the second cover membermay be formed of at least one of a glass material, a metal material, and a plastic material. For example, the second cover membermay be formed of a material different from that of the first cover member, but is not limited thereto. For example, the second cover membermay have the same thickness as that of the first cover memberor may be relatively thinner than that of the first cover member. For example, in order to more stably support the vibration apparatusand reduce the weight of the vibration driving apparatus, the first cover membermay have a relatively thicker thickness than that of the second cover member.

10 500 500 100 500 100 100 100 a According to an embodiment of the present disclosure, the vibration driving apparatusmay include at least one vibration apparatus. The at least one vibration apparatusmay be configured to vibrate the vibration member. The vibration apparatusmay be connected to the rear surface or the first surfaceof the vibration member. Accordingly, sound or vibration may be generated on the front surface of the vibration member.

500 500 1 500 2 100 10 500 1 100 500 2 100 100 The vibration apparatusmay include a first vibration apparatus-and a second a vibration apparatus-disposed in parallel on the first surface of the vibration member. The vibration driving apparatusmay include a first vibration apparatus-disposed in the first area (or left area) of the vibration memberand a second a vibration apparatus-disposed in the second area (or right area) of the vibration memberwith respect to the center of the rear surface of the vibration member.

500 1 100 100 500 2 100 100 10 500 1 500 2 500 2 500 1 500 2 For example, the first vibration apparatus-may vibrate a first rear area of the vibration memberto generate sound PVS due to vibration in a first area (or left area) of the vibration member. The second vibration apparatus-may vibrate a second rear area of the vibration memberto generate sound PVS due to vibration in a second area (or right area) of the vibration member. For example, the vibration driving apparatusmay output sound in a two-channel form by left and right sound separation through the first vibration apparatus-and the second vibration apparatus-and-. The first vibration apparatus-may be configured to output a left sound, and the second vibration apparatus-may be configured to output a right sound.

500 1 500 2 500 1 500 2 500 1 500 2 510 550 570 500 1 500 2 510 550 570 500 100 According to an embodiment of the present disclosure, the first vibration apparatus-and the second vibration apparatus-may be the same vibration apparatus. The first vibration apparatus-and the second vibration apparatus-may have the same structure. Each of the first vibration apparatus-and the second vibration apparatus-may be a vibration apparatus including the sound generating module, the vibration module, and the spring member. Each of the first vibration apparatus-and the second vibration apparatus-may be a vibration apparatus in which the sound generating module, the vibration module, and the spring memberare integrated. In the embodiment of the present disclosure, the present invention has been described by using two vibration apparatus as an example, but the number of vibration apparatusmay be variously provided and may be variously arranged according to the size of the vibration member.

500 510 550 570 According to an embodiment of the present disclosure, the vibration apparatusmay include a sound generating module, at least one vibration module, and a spring member.

510 100 100 510 100 100 510 100 100 510 100 510 a a The sound generating modulemay be disposed or configured on the rear surface or the first surfaceof the vibration member. The sound generating modulemay be connected to the rear surface or the first surfaceof the vibration member. The sound generating modulemay vibrate the vibration memberto generate a sound to the front surface of the vibration member. For example, the sound generating modulemay be configured to vibrate the vibration memberaccording to a current (or voice current) applied based on Fleming's left-hand rule. The sound generating modulemay be represented by a sound generation unit, an actuator, a exciter, a transducer, or the like, but is not limited thereto.

510 510 511 512 513 514 515 516 517 According to an embodiment of the present disclosure, the sound generating modulemay be a coil type sound generating module including a voice coil. Accordingly, the sound generating modulemay include a base plate, a magnet, a center pole, a bobbin, a coil, an edge frame, and a damper.

511 300 511 300 600 511 511 511 511 511 511 100 300 511 511 511 300 511 a a b a b a The base platemay be connected to or fixed to the cover member. The base platemay be supported or connected to the cover membervia the connection member. For example, the base platemay include an extension portion. The extension portionmay protrude in parallel from an outer side surfaceof the base plate. The extension portionmay be formed between the vibration memberand a partial area of the cover memberadjacent to the outer side surfaceof the base plate. The extension portionmay overlap a partial area of the cover memberadjacent to the base plate.

600 300 511 511 511 300 600 511 300 600 510 300 600 a a The connection membermay be coupled to a partial area of the cover memberoverlapping the extension partand the extension part. Accordingly, the base plateand the cover membermay be connected or fixed via the connection member. Accordingly, the base plateand the cover membermay be integrated via the connection member. Accordingly, the sound generating moduleand the cover membermay be integrated via the connection member.

511 510 511 512 513 516 511 512 514 511 511 511 511 s The base platemay be a main body of the sound generating module. The base platemay support at least one of the magnet, the center pole, and the edge frame. The base platemay include a groove portion for accommodating the magnetand the bobbin. For example, the groove portion may be formed to be concave from the upper surface of the base plateto have a circular shape. For example, the base platemay include a plastic material. For example, the base platemay include any one of polycarbonate PC, polyethylene PE, polypropylene PP, polystyrene PS, acrylic PMMA, nylon, and polyamide PA. The base platemay be represented by a lower plate, a base frame, a yoke, but is not limited thereto.

512 513 514 515 511 100 512 515 512 515 510 510 510 The magnet, the center pole, the bobbin, and the coilmay be represented as a magnetic circuit unit or a magnetic vibration unit installed in the base plateto vibrate the vibrating member. For example, the magnetic circuit unit may have an external magnetic type or dynamic type structure in which the magnetis disposed outside the coil. As another example, the magnetic circuit unit may have an internal magnetic type or micro type structure in which the magnetis disposed inside the coil. The sound generating moduleincluding the magnetic circuit unit having an internal magnetic type structure may have a small leakage magnetic flux and a small size as a whole. The sound generating moduleaccording to an embodiment of the present disclosure may have an external magnetic type or an internal magnetic type structure. In the following description, a case in which the sound generating modulehas an internal type structure is described as an example.

512 511 512 512 2 3 3 12 19 The magnetmay be disposed on the base plate. The magnetmay use a sintered magnet such as barium ferrite or the like. The magnetmay include one or more of iron trioxide FeO, barium witherite BaCO, neodymium Nd, strontium ferrite FeOSr with improved magnetic properties, aluminum Al, nickel Ni, cobalt Co alloy cast magnets, etc. For example, a neodymium magnet may be neodymium-iron-boron Nd—Fe—B or the like, but is not limited thereto.

513 512 513 514 514 513 514 513 514 513 The center polemay be disposed on the magnet. The center polemay be received or inserted into the bobbinto guide the lifting of the bobbin. For example, the center polemay be received or inserted into the bobbin, and thus, an outer surface of the center polemay be surrounded by the bobbin. The center polemay be represented by an elevation guider, pole pieces, or the like, but is not limited thereto.

514 511 514 512 514 514 514 514 514 514 110 515 514 514 The bobbinmay be disposed on the base plate. The bobbinmay surround the magnet. The bobbinmay have a circular shape or an elliptical (or oval) shape, but is not limited thereto. For example, in an elliptical bobbin, the ratio of the major axis diameter to the minor axis diameter can range from 1.3:1 to 2:1. The elliptical bobbinmay improve sound in a higher range than a circular shape. The elliptical bobbinmay generate less heat due to vibration, allowing it to have excellent heat dissipation properties. For example, the bobbinmay be a structure made of pulp, a paper-processed material, aluminum, magnesium, an alloy thereof, a synthetic resin such as polyimide, or the like. For example, the bobbinmay be implemented as a polyimide film having relatively excellent heat dissipation characteristics and relatively light in order to prevent a local image quality defect of the display paneldue to heat generated from the coil. For example, the polyimide film is excellent in thermal and mechanical strength, and thus reliability of the bobbinmay be improved. For example, since polyimide films have excellent heat dissipation properties, there is an effect of reducing the generation of heat due to the vibration of bobbin. For example, the polyimide film may be KAPTON, and it may be a condensation product of pyromelitec dianhydride and 4,4′-oxydianiline.

515 514 515 514 515 515 514 515 512 100 514 100 The coilmay be wound to surround an outer circumference surface of the bobbinand may receive a current (or voice current) for generating sound from the outside. For example, the coilmay be lifted together with the bobbin. The coilmay be a voice coil. For example, when a current is applied to the coil, the entire bobbinmoves up and down according to Fleming's left-hand rule based on an applied magnetic field formed around the coiland an external magnetic field formed around the magnet. Since the vibration of the display membercaused by the up-and-down movement (or vibration) of the bobbin, sound PVS or sound waves may be generated from the front surface FD of the vibrating member.

515 515 510 110 515 514 The coilmay be made of a material having relatively excellent heat dissipation characteristics. For example, the coilmay include an aluminum material that has better thermal conductivity than copper, which is a material of a general coil, and thus has relatively excellent heat dissipation characteristics and is relatively lighter than copper. Accordingly, the sound generating moduleaccording to an embodiment of the present disclosure may prevent the occurrence of image quality defects in the display panelby transferring heat generated from the coilto the bobbin.

517 511 514 517 511 517 514 517 514 514 517 511 514 514 514 514 517 517 515 517 517 The dampermay be provided between the base plateand the bobbin. One side of the dampermay be connected to the base plate, and the other end of the dampermay be connected to an outer surface of the bobbin. The dampermay have a corrugated structure between one side and the other side, and may adjust vibration of the bobbinwhile contracting and relaxing according to vertical movement of the bobbin. The damperis connected between the base frameand the bobbinand may limit a vibration distance of the bobbinthrough a restoring force. For example, when the bobbinvibrates beyond a certain distance or below a certain distance, the bobbinmay return to its original position due to the restoring force of the damper. For example, the dampermay include a metal material electrically connected to the coil. For example, the dampermay be made of stainless steel, copper (Cu), or the like, but is not limited thereto. The dampermay be expressed in other terms such as a spider, a suspension, an edge, or the like, but is not limited thereto.

516 511 517 516 511 The edge framemay be installed on the front surface of the base plateand may support the damper. The edge framemay be formed at a constant height on the edge of the front surface of the base plate.

410 100 510 100 510 410 410 A first adhesive membermay be provided between the vibration memberand the sound generating module. For example, the vibration memberand the sound generating modulemay be connected to each other via a first adhesive member. The first adhesive membermay be one or more of a double-sided tape, a double-sided foam tape, a double-sided pad, a double-sided foam pad, a single-side tape, a single-sided foam tape, a single-sided pad, a single-sided foam pad, an adhesive, and a bond, but is not limited thereto.

10 550 10 550 The vibration driving apparatusaccording to an embodiment of the present disclosure may include at least one vibration module. The vibration driving apparatusaccording to an embodiment of the present disclosure may include a single vibration module.

550 100 510 550 100 100 550 100 511 550 510 570 550 510 570 a The vibration modulemay be provided between the vibration memberand the sound generating module. The vibration modulemay be connected to a rear surface or a first surfaceof the vibration member. The vibration modulemay be provided between the vibration memberand the base plate. The vibration modulemay be connected to the sound generating modulevia a spring member. The vibration modulemay be integrated with the sound generating modulevia a spring member.

550 510 550 550 According to an embodiment of the present disclosure, the vibration modulemay have a structure different from that of the sound generating module. For example, the vibration modulemay include a film-type vibration module. For example, the vibration modulemay include a piezoelectric material having a piezoelectric effect, a composite piezoelectric material, or an electroactive material.

510 550 510 550 100 510 550 510 550 100 110 510 550 100 110 The sound pressure characteristics may be affected according to the attachment positions of the sound generating moduleand the vibration module. For example, when the sound generating moduleand the vibration moduleare individually attached to the vibration member, a distance between the sound generating moduleand the vibration modulemay be far. Accordingly, the sound pressure characteristics of the mid and low ranges are maintained in the area where the sound generation moduleis attached, and the sound pressure characteristics of the mid and high range may be maintained in the area where the vibration moduleis attached. Therefore, the sound pressure characteristics in the vibration memberor display panelmay be non-uniform according to the area. According to an embodiment of the present disclosure, since the sound generating moduleand the vibration moduleare integrated, sound pressure characteristics that are uniform on the front surface of the vibration memberor the display panelmay be maintained without being affected by the attachment position.

550 511 512 514 515 500 300 600 1 100 511 550 1 100 511 512 514 515 According to an embodiment of the present disclosure, the vibration modulemay be disposed on one side or the other side of the base plateto be spaced apart from the magnet, the bobbin, and the coilgenerating sound or vibration. For example, the vibration apparatusis connected to the cover membervia the connection member, and thus, a first space Smay be generated on one side or the other side between the vibration memberand the base plate. The vibration modulemay be disposed in the first space Sbetween the vibration memberand the base plateto be spaced apart from the magnet, the bobbin, and the coil.

550 512 514 515 550 550 10 512 514 515 10 550 512 514 515 When the vibration modulecontacts the magnet, the bobbin, and the coilgenerating sound or vibration, durability of the vibration moduleincluding the piezoelectric material may be relatively weak. Accordingly, fatigue damage of the vibration modulemay occur due to vibration. In the vibration driving apparatusaccording to an embodiment of the present disclosure the magnet, the bobbin, and the coilgenerating sound or vibration are separated from each other, and thus fatigue damage may not occur. The vibration driving apparatusaccording to the embodiment of the present disclosure can enhance the sound pressure characteristics of the mid-low range and the mid-high range without mutual interference, without the vibration moduleand the magnet, bobbin, and coilthat generate sound or vibration coming into contact with each other.

550 550 550 550 5 6 FIGS.and The vibration modulemay be connected to the signal supply member. The signal supply member may be electrically connected to the pad portion disposed on the vibration moduleand may supply a vibration driving signal (or an acoustic signal) provided from the vibration driving portion to the vibration module. Hereinafter, detailed configurations of the vibration moduleand the signal supply member will be described in detail with reference to.

500 570 570 100 100 570 550 510 570 510 550 570 510 550 510 550 a According to an embodiment of the present disclosure, the vibration apparatusmay include a spring member. The spring membermay be provided on the first surfaceof the vibration member. The spring membermay be provided between the vibration moduleand one side or the other side of the sound generating module. The spring membermay be connected to the sound generating moduleand the vibration module. The spring membermay be connected to the sound generating moduleand the vibration modulewhile filling a space between the sound generating moduleand the vibration module.

570 550 511 570 550 550 550 100 570 550 550 511 510 550 510 570 According to an embodiment of the present disclosure, the spring membermay be provided between the vibration moduleand the base plate. The spring membersupports the vibration module, and may guide the vibration modulesuch that the vibration moduleis easily attached to the vibration member. The spring membermay support the vibration modulesuch that the vibration moduleis easily attached to the base plateof the sound generating module. The vibration modulemay be coupled or integrated with the sound generating moduleby a spring member.

430 570 550 570 550 440 570 510 570 510 430 440 570 550 570 430 510 570 440 430 440 410 A third adhesive memberfor adhering the spring memberand the vibration modulemay be configured between the spring memberand the vibration module. A fourth adhesive memberfor adhering the spring memberand the sound generating modulemay be configured between the spring memberand the sound generating module. Each of the third adhesive memberand the fourth adhesive membermay have a width equal to or greater than that of the spring member. Accordingly, the vibration moduleand the spring membermay be easily connected via the third adhesive member. Accordingly, the sound generating moduleand the spring membermay be easily connected via the fourth adhesive member. The third adhesive memberand the fourth adhesive membermay each include the same material as that of the first adhesive member, but are not limited thereto.

570 550 2 570 1 550 570 550 550 100 According to an embodiment of the present disclosure, the spring membermay have a size equal to or smaller than that of the vibration module. For example, the width Wof the spring membermay be equal to or smaller than the width Wof the vibration module, but is not limited thereto. For example, the spring membermay be disposed in a central portion of the vibration module. Accordingly, the vibration modulemay be safely supported while receiving a uniform force horizontally or vertically, and may be easily coupled to the vibration member.

570 570 570 570 570 570 570 570 570 According to an embodiment of the present disclosure, the spring membermay include a metallic material. The spring membermay have elasticity and restoring force. For example, the spring membermay be at least one structure configured to accumulate buffering action and mechanical energy using the elasticity and restoring force of a material. For example, the spring constant of the spring membermay be 50 N/m or less. For example, the spring constant may be determined according to the line thickness, the effective number of windings, length, outer diameter, inner diameter, material, and the like. For example, the line thickness may be the thickness of the spring member. For example, the effective number of windings may be the number of times the spring is wound around the spring member. The line thickness of the spring membermay be 0.4 mm, the effective number of windings is 5 times, the length may be 8 mm, the outer diameter may be 12 mm, and the inner diameter may be 11.2 mm. The spring membermay be made of a SUS-based material. For example, the spring membermay include any one of SUS 316, SUS 304, SUS 302, and SUS 631.

500 100 570 550 100 Accordingly, in the process of connecting the vibration apparatusto the vibration member, the spring membermay be compressed and the vibration modulemay be pressed in the direction of the vibration member.

10 570 550 100 100 510 10 550 510 570 a The vibration driving apparatusaccording to the embodiment of the present disclosure includes a spring member, and thus the vibration modulemay be easily coupled to the first surfaceof the vibration memberand the sound generating module. In the vibration driving apparatusaccording to the embodiment of the present disclosure, the vibration moduleand the sound generating modulemay be more easily integrated with each other by configuring the spring member.

10 570 550 100 10 570 300 In addition, since the vibration driving apparatusaccording to the embodiment of the present disclosure includes a spring member, vibration (or sound) generated by the vibration modulemay be induced upward or toward the vibration member. In addition, since the vibration driving apparatusaccording to the embodiment of the present disclosure includes a spring member, vibration (or sound) transmitted in the lower direction or the direction of the cover membermay be absorbed and buffered.

10 600 600 300 511 500 300 According to an embodiment of the present disclosure, the vibration driving apparatusmay further include a connection member. The connection membermay penetrate the cover memberand the base plate, and may connect or fix the vibration apparatusto the cover member.

600 300 511 511 511 600 300 511 511 600 300 511 511 a a a a a a. Accordingly, the connection membermay be configured in a partial area of the cover memberoverlapping the extension portionand the extension portionof the base plate. The connection membermay be configured to penetrate a partial area of the cover memberoverlapping the extension portionand the extension portion. The connection membermay be fastened to a partial area of the cover memberoverlapping the extension portionand the extension portion

600 610 630 610 511 300 511 630 511 610 500 300 610 630 630 500 300 a a According to an embodiment of the present disclosure, the connection membermay include a screw memberand a nut member. The screw membermay be configured to penetrate an extension partand a partial area of the cover memberoverlapping the extension part. The nut membermay be configured on the base plateand fastened to the screw member. The vibration apparatusmay be easily fastened to the cover memberby the screw memberand the nut member. For example, the nut membermay be a self-clinching nut or a PEM nut, and embodiments are not limited thereto. When the self-clinching nut is used, vibration generated in the vibration apparatusmay be partially absorbed by the self-clinching nut, and thus, vibration transmitted to the cover membermay be reduced.

10 700 According to an embodiment of the present disclosure, the vibration driving apparatusmay further include a middle frame.

700 100 300 700 100 300 700 100 300 1 100 300 700 1 The middle framemay be disposed between a rear edge of the vibration memberand a front edge of the cover member. The middle framemay support edges of each of the vibration memberand the cover member. The middle framemay surround each side surface of at least one of the vibration memberand the cover member. A first gap space GSmay be provided between the vibration memberand the cover memberby the middle frame. The first gap space GSmay be expressed as an air gap, a vibration space, a vibration apparatus arrangement space, or the like, but is not limited thereto.

700 700 According to an embodiment of the present disclosure, the middle framemay be formed of a metal material or a plastic material. For example, the middle framemay be formed of a metal material to improve a side exterior design of the display apparatus and to protect the side surface of the display apparatus.

700 100 707 700 300 708 300 700 700 350 350 The middle framemay be connected to or coupled to the rear edge of the vibration membervia a first coupling member. The middle framemay be connected to or coupled to the front edge of the cover membervia a second coupling member. The front surface of the cover membermay be the other surface, the second surface, the upper surface, or the like, but is not limited thereto. The middle framemay be expressed as a middle cabinet, a middle cover, a middle chassis, or the like, but is not limited thereto. Alternatively, the middle framemay be integrally formed with the second cover memberand may be expressed as a second cover member.

700 710 730 710 730 According to an embodiment of the present disclosure, the middle framemay include a support portionand a sidewall portion. For example, the support portionmay be a first portion, and the sidewall portionmay be a second portion.

710 710 100 300 The support portionmay have a single frame structure of a square shape, but is not limited thereto. For example, the support portionmay have a shape of a plurality of split bars interposed between a rear edge of the vibration memberand a front edge of the cover member.

710 100 300 100 300 710 100 707 710 300 708 710 500 100 300 707 708 The support portionmay be interposed between the rear edge of the vibration memberand the front edge of the cover member, and thus, a gap space GS may be provided between the vibration memberand the cover member. A front surface of the support portionmay be connected to a rear edge of the vibration membervia a first coupling member. A rear surface of the support portionmay be connected to a front edge of the cover membervia a second coupling member. For example, the thickness of the support portionmay be set according to the thickness of the vibration apparatusprovided between the vibration memberand the cover member, the thickness of the first coupling member, and the thickness of the second coupling member.

707 100 710 707 The first coupling membermay be disposed between a rear edge of the vibration memberand a front surface of the support portion. For example, the first coupling membermay be an adhesive resin, a double-sided tape, or a double-sided adhesive foam pad, but is not limited thereto.

708 300 710 708 707 708 The second coupling memberis disposed between the front edge of the vibration memberand the rear surface of the support portion. For example, the second coupling membermay be an adhesive resin, a double-sided tape, or a double-sided adhesive foam pad, but is not limited thereto. For example, the first coupling memberand the second coupling membermay be formed of the same material or different materials.

730 710 10 730 100 300 100 300 10 The sidewall portionmay be vertically coupled to the outer side surface of the support portionin parallel with the thickness direction Z of the vibration driving apparatus. The sidewall portionmay surround both the outer side surface (or outer sidewall) of the vibration memberand the outer side surface (or outer sidewall) of the cover member. Accordingly, the outer side surface of each of the vibration memberand the cover membermay be protected, and an outer design of the side surface of the vibration driving apparatusmay be improved.

10 700 100 300 100 300 The vibration driving apparatusaccording to another embodiment of the present disclosure may include an adhesive member instead of the middle frame. The adhesive member may be interposed between the rear edge of the vibration memberand the front edge of the cover member, and thus, a gap space GS may be provided between the vibration memberand the cover member.

10 100 500 100 300 Accordingly, the vibration driving apparatusaccording to an embodiment of the present disclosure may output the sound PVS to the front FD of the display panelby one or more vibration apparatusdisposed between the vibration memberand the cover member. Accordingly, the immersion of the viewer watching the image of the display apparatus may be improved.

10 110 In addition, the vibration driving apparatusaccording to an embodiment of the present disclosure does not need to configure an additional speaker because sound PVS is generated by vibration of the display panel. Accordingly, the design of the set device and the degree of freedom in speaker placement can be improved.

10 500 510 550 The vibration driving apparatusaccording to the embodiment of the present disclosure includes a vibration apparatusin which the sound generating moduleand the vibration moduleare integrated, and thus, the acoustic characteristics and/or sound pressure characteristics of the mid-low and mid-high ranges may be improved.

10 500 510 550 500 In addition, the vibration driving apparatusaccording to the embodiment of the present disclosure includes a vibration apparatusin which the sound generating moduleand the vibration moduleare integrated, and thus, similar low-mid and mid-high range acoustic and/or sound pressure characteristics can be implemented at all attachment locations of the vibration apparatus.

10 500 510 550 In addition, the vibration driving apparatusaccording to the embodiment of present disclosure includes a vibration apparatusin which the sound generating moduleand the vibration moduleare integrated, and thus, multi-panel sound can be implemented, and there is the effect of uni-materialization.

10 500 510 550 10 In addition, the vibration driving apparatusaccording to the embodiment of present disclosure includes a vibration apparatusin which the sound generating moduleand the vibration moduleare integrated, and thus, the structure of the vibration driving apparatuscan be simplified and manufacturing costs can be reduced.

10 570 550 100 In addition, the vibration driving apparatusaccording to the embodiment of the present disclosure includes a spring member, and thus, the vibration modulemay be more easily connected to the rear surface of the vibration member.

5 FIG. 6 FIG. 5 FIG. 5 6 FIGS.and 1 4 FIGS.to is a diagram illustrating a vibration module according to an embodiment of the present disclosure.is a cross-sectional view taken along the line II-II′ shown inaccording to an embodiment of the present disclosure.show the vibration module and the signal supply member of the vibration apparatus described with reference to.

5 6 FIGS.and 550 550 550 Referring to, the vibration moduleaccording to an embodiment of the present disclosure may include a piezoelectric material having piezoelectric characteristics. The vibration modulemay be formed of a ceramic-based piezoelectric material capable of implementing relatively high vibration, or may be formed of a piezoelectric ceramic having a perovskite-based crystal structure. For example, the vibration modulemay be a vibration generating device, a vibration film, a vibration generating film, a vibrator, a vibration generator, an active vibrator, an active vibration generator, an actuator, an exciter, a film actuator, a film exciter, an ultrasonic actuator, or an active vibration member, or the like, but embodiments of the present disclosure are not limited thereto.

550 551 The vibration moduleaccording to an embodiment of the present disclosure may include a vibration generating portion.

551 551 551 The vibration generating portionmay be configured to vibrate by a piezoelectric effect according to a driving signal. The vibration generating portionmay include at least one of a piezoelectric inorganic material and a piezoelectric organic material. For example, the vibration generating portionmay be a vibration device, a piezoelectric device, a piezoelectric device unit, a piezoelectric device layer, a piezoelectric structure, a piezoelectric vibration unit, a piezoelectric vibration layer, or the like, and embodiments of the present disclosure are not limited thereto.

551 551 551 551 a b c. The vibration generating portionaccording to an embodiment of the present disclosure may include a vibration layer, a first electrode layer, and a second electrode layer

551 551 a a The vibration layermay include a piezoelectric material or an electroactive material having a piezoelectric effect. For example, the piezoelectric material can have a characteristic in which, when pressure or twisting phenomenon is applied to a crystalline structure by an external force, a potential difference occurs due to dielectric polarization caused by a relative position change of a positive (+) ion and a negative (−) ion, and thus a vibration is generated by an electric field based on a reverse voltage applied thereto. For example, the vibration layermay be a piezoelectric layer, a piezoelectric material layer, an electroactive layer, a piezoelectric composite layer, a piezoelectric composite, a piezoelectric ceramic composite, or the like, and embodiments of the present disclosure are not limited thereto.

551 a The vibration layercan be configured as a ceramic-based material capable of implementing a relatively strong vibration, or can be configured as a piezoelectric ceramic having a perovskite-based crystalline structure. The perovskite crystalline structure can have a piezoelectric effect and/or an inverse piezoelectric effect and can be a plate-shaped structure having orientation or alignment.

4 2 3 2 4 3 2 4 7 3 3 3 3 3 3 3 3 551 a The piezoelectric ceramic can be configured as a single crystalline ceramic having a crystalline structure, or can be configured as a ceramic material having a polycrystalline structure or polycrystalline ceramic. The piezoelectric material of the single crystal ceramic may include a lead zirconate titanate PZT-based materials containing lead (Pb), zirconium (Zr), and titanium (Ti), a lead zirconate nickel niobate PZNN materials containing lead (Pb), zirconium (Zr), nickel (Ni), and niobium (Nb), α-AlPO, α-SiO, LiNbO, Tb(MoO), LiBO, ZnO, CaTiO, BaTiO, (K,Na)NbO, or SrTiO, but embodiments of the present specification are not limited thereto. The piezoelectric material of the polycrystalline ceramic may include a lead zirconate titanate PZT-based materials containing lead (Pb), zirconium (Zr), and titanium (Ti), or a lead zirconate nickel niobate PZNN materials containing lead (Pb), zirconium (Zr), nickel (Ni), and niobium (Nb), but embodiments of the present specification are not limited thereto. For example, the vibration layermay include at least one of CaTiO, BaTiO, (K, Na)NbO, and SrTiO, which do not contain lead (Pb), but embodiments of present disclosure are not limited thereto.

551 551 1 551 551 551 551 b s a b a a. The first electrode layermay be disposed on the first surface (or upper surface or front surface)of the vibration layer. The first electrode layermay have the same size as the vibration layeror may have a smaller size than the vibration layer

551 551 2 551 1 551 551 551 551 551 551 c s s a c a a c a The second electrode layermay be disposed on a second surface (or a lower surface or a rear surface)that is different from or opposite to the first surfaceof the vibration layer. The second electrode layermay have the same size as the vibration layeror may have a smaller size than the vibration layer. For example, the second electrode layermay have the same shape as the vibration layer, but embodiments of the present disclosure are not limited thereto.

551 551 551 551 551 551 551 1 551 551 2 551 551 551 551 551 551 551 b c b c a b s a c s a b c a b c a According to an embodiment of the present disclosure, in order to prevent an electrical connection (or short circuit) between the first electrode layerand the second electrode layer, each of the first electrode layerand the second electrode layermay be formed on the entire portion except for an edge portion of the vibration layer. For example, the first electrode layermay be formed on the entire portion of the remaining portion of the first surfaceexcept for an edge portion thereof. For example, the second electrode layermay be formed on the entire portion of the second surfaceof the vibration layerexcept for an edge portion thereof. For example, a distance between a side surface (or outer sidewall) of each of the first electrode layerand the second electrode layerand a side surface (or outer sidewall) of the vibration layermay be at least 0.1 mm or more. For example, a distance between a side surface of each of the first electrode layerand the second electrode layerand a side surface of the vibration layermay be at least 0.5 mm or more, but embodiments of the present disclosure are not limited thereto.

551 551 551 551 551 b c b c a According to an embodiment of the present disclosure, at least one of the first electrode layerand the second electrode layermay be formed of a transparent conductive material, a translucent conductive material, or an opaque conductive material. For example, the transparent or translucent conductive material may include indium tin oxide (ITO) or indium zinc oxide (IZO), but embodiments of the present disclosure are not limited thereto. The opaque conductive material may include gold (Au), silver (Ag), platinum (Pt), palladium (Pd), molybdenum (Mo), magnesium (Mg), carbon (C), copper (Cu), nickel (Ni), silver including a glass frit, or the like, but embodiments of the present disclosure are not limited thereto. For example, each of the first electrode layerand the second electrode layermay include silver (Ag) having a low specific resistance in order to improve electrical characteristics and/or vibration characteristics of the vibration layer. For example, carbon may be a carbon material including carbon black, ketjen black, carbon nanotubes, and graphite, but embodiments of the present disclosure are not limited thereto.

551 551 551 551 551 551 551 551 551 a b c a b c a c b. The vibration layermay be polarized (or polling) by a constant voltage applied to the first electrode layerand the second electrode layerin a constant temperature atmosphere or a temperature atmosphere changed from high temperature to room temperature, but embodiments of the present disclosure are not limited thereto. For example, the polarization direction (or the polling direction) formed in the vibration layermay be formed or oriented (or arranged) from the first electrode layerto the second electrode layer, but is not limited thereto. For another example, the polarization direction (or the polling direction) formed in the vibration layermay be formed or oriented (or arranged) from the second electrode layerto the first electrode layer

551 551 551 551 551 551 551 550 a b c a b c a The vibration layermay vibrate by alternately repeating contraction and/or expansion by a reverse piezoelectric effect by a driving signal applied to the first electrode layerand the second electrode layerfrom the outside. For example, the vibration layermay vibrate in a vertical direction (or a thickness direction) and a plane direction by a signal applied to the first electrode layerand the second electrode layer. The vibration layermay be displaced (or vibrated or driven) by contraction and/or expansion in both the plane and the vertical direction, and thus, vibration characteristic including acoustic characteristics and/or sound pressure characteristics of the vibration modulemay be improved.

550 553 553 a d. According to an embodiment of the present disclosure, the vibration modulemay further include a first cover memberand a second cover member

553 551 553 551 551 553 551 553 551 551 a a b a a b. The first cover membermay be disposed on a first surface of the vibration generating portion. For example, the first cover membermay be configured to cover the first electrode layerof the vibration generating portion. For example, the first cover membermay be configured to have a size larger than that of the vibration generating portion. The first cover membermay be configured to protect the first surface of the vibration generating portionand the first electrode layer

553 551 553 551 551 553 551 553 553 551 551 d d c d a d c The second cover membermay be disposed on the second surface of the vibration generating portion. For example, the second cover membermay be configured to cover the second electrode layerof the vibration generating portion. For example, the second cover membermay be configured to have a size larger than that of the vibration generating portion, and may be configured to have the same size as that of the first cover member. The second cover membermay be configured to protect the second surface and the second electrode layerof the vibration generating portion.

553 553 553 553 a d a d According to an embodiment of the present disclosure, the first cover memberand the second cover membermay include the same material or different materials. For example, each of the first cover memberand the second cover membermay be a polyimide film or a polyethylene terephthalate film, but embodiments of the present disclosure are not limited thereto.

553 551 551 553 553 551 551 553 a b b a b b. The first cover membermay be connected to or coupled to the first surface of the vibration generating portionor the first electrode layervia the first adhesive layer. For example, the first cover membermay be connected to or coupled to the first surface of the vibration generating portionor the first electrode layerby a film laminating process using the first adhesive layer

553 551 551 553 553 551 551 553 d c c d c c. The second cover membermay be connected to or coupled to the second surface or the second electrode layerof the vibration generating portionvia the second adhesive layer. For example, the second cover membermay be connected to or coupled to the second surface or the second electrode layerof the vibration generating portionby a film laminating process using the second adhesive layer

553 553 553 553 b c b c According to an embodiment of the present disclosure, each of the first adhesive layerand the second adhesive layermay include an electrical insulating material having an adhesive property, which may be compressed and restored. For example, each of the first adhesive layerand the second adhesive layermay include an epoxy resin, an acrylic resin, a silicone resin, or a urethane resin, but embodiments of the present disclosure are not limited thereto.

553 553 553 553 551 553 553 551 b c a d b c The first adhesive layerand the second adhesive layermay be configured between the first cover memberand the second cover memberto surround the vibration generating portion. For example, at least one of the first adhesive layerand the second adhesive layermay be configured to surround the vibration generating portion.

553 553 100 420 553 553 553 553 511 100 551 100 551 a d a d b c 2 3 FIGS.and Any one of the first cover memberand the second cover membermay be connected to or coupled to the vibration membervia the second adhesive memberillustrated in. For example, the first cover member, the second cover member, the first adhesive layer, and the second adhesive layermay be partially omitted depending on the configuration of the vibration generating portion. For example, for connection with the vibration member, the cover member and the adhesive layer may be configured only on one surface of the vibration generating portion. For another example, for connection with the vibration member, the adhesive layer may be configured only on one surface of the vibration generating portion.

500 580 The vibration apparatusaccording to an embodiment of the present disclosure may further include a signal supply member.

580 551 580 551 580 551 551 551 b c The signal supply membermay be configured to supply a driving signal supplied from the driving circuit portion to the vibration generating portion. The signal supply membermay be configured to be electrically connected to the vibration generating portion. The signal supply membermay be configured to be electrically connected to the first and second electrode layersandof the vibration generating portion.

580 553 553 580 553 553 553 553 580 580 510 580 580 551 a d a d a d A part of the signal supply membermay be accommodated (or inserted) between the first cover memberand the second cover member. An end portion (or a terminal portion or one side) of the signal supply membermay be disposed or inserted (or accommodated) between one edge portion of the first cover memberand one edge portion of the second cover member. One edge portion of the first cover memberand one edge portion of the second cover membermay accommodate or vertically cover the end portion (or a terminal portion or one side) of the signal supply member. Accordingly, the signal supply membermay be integrated with the vibration generating portion. For example, the signal supply membermay include a signal cable, a flexible cable, a flexible printed circuit cable, a flexible flat cable, a single-sided flexible printed circuit, a single-sided flexible printed circuit board, a flexible multilayer printed circuit, or a flexible multilayer printed circuit board, but embodiments of the present disclosure are not limited thereto. As another example, the signal supply membermay be connected to the vibration generating portionby soldering.

580 585 583 583 580 585 583 583 a b a b. The signal supply memberaccording to an embodiment of the present disclosure may include a base member, and a plurality of signal linesand. For example, the signal supply membermay include a base member, a first signal line, and a second signal line

585 585 The base membermay include a transparent or opaque plastic material, but embodiments of the present disclosure are not limited thereto. The base memberhas a constant width in the first direction X and may extend long in the second direction Y crossing the first direction X.

583 583 585 583 583 585 583 583 585 a b a b a b The first and second signal linesandare disposed on the first surface of the base memberin parallel with the second direction Y, and may be spaced apart from each other or electrically separated from each other along the first direction X. The first and second signal linesandmay be disposed parallel to each other on the first surface of the base member. For example, the first and second signal linesandmay be formed in a line shape by patterning of a metal layer (or conductive layer) formed or deposited on the first surface of the base member.

583 583 a b End portions (or a terminal portion or one side) of the first and second signal linesandmay be individually flexed or bent by being separated from each other.

583 551 551 583 551 551 553 583 551 551 583 551 551 583 551 551 a b a b a a b a b a b End portions (or a terminal portion or one side) of the first signal linemay be electrically connected to the first electrode layerof the vibration generating portion. For example, an end portion of the first signal linemay be electrically connected to at least a portion of the first electrode layerof the vibration generating portionat an edge portion of one side of the first cover member. For example, an end portion (or a terminal portion or one side) of the first signal linemay be directly electrically connected to at least a portion of the first electrode layerof the vibration generating portion. For example, an end portion (or a terminal portion or one side) of the first signal linemay be directly connected to or in direct contact with the first electrode layerof the vibration generating portion. Accordingly, the first signal linecan supply the first driving signal, which is provided from the vibration driving portion, to the first electrode layerof the vibration generating portion.

583 551 551 583 551 551 553 583 551 551 583 551 551 583 551 551 b c b c d b c b c b c End portions (or a terminal portion or one side) of the second signal linemay be electrically connected to the second electrode layerof the vibration generating portion. For example, an end portion of the second signal linemay be electrically connected to at least a portion of the second electrode layerof the vibration generating portionat an edge portion of one side of the second cover member. For example, an end portion (or a terminal portion or one side) of the second signal linemay be directly electrically connected to at least a portion of the second electrode layerof the vibration generating portion. For example, an end portion (or a terminal portion or one side) of the second signal linemay be directly connected to or in direct contact with the second electrode layerof the vibration generating portion. Accordingly, the second signal linecan supply the second driving signal, which is provided from the vibration driving portion, to the second electrode layerof the vibration generating portion.

580 585 583 583 580 551 551 580 a d According to an embodiment of the present disclosure, a part of the signal supply memberor a part of the base memberis disposed or inserted (or accommodated) between the first cover memberand the second cover member, and thus, the signal supply membermay be integrated with the vibration generating portion. Accordingly, the vibration generating portionand the signal supply membermay be configured as a single component, thereby having an effect of uni-materialization.

583 583 580 551 551 580 550 a b According to an embodiment of the present disclosure, since the first signal lineand the second signal lineof the signal supply memberare integrated with the vibration generating portion, a soldering process for electrical connection between the vibration generating portionand the signal supply membermay not be required. Accordingly, the structure and manufacturing process of the vibration modulemay be simplified. Accordingly, the vibration driving apparatus according to the embodiment of the present disclosure has an effect of improving a harmful process.

500 551 550 According to another embodiment of the present disclosure, the vibration modulemay include two or more vibration generating portion. For example, the vibration modulemay include a first vibration generating portion and a second vibration generating portion, which are stacked.

550 551 In order to maximize the amplitude displacement of the vibration moduleand/or the amplitude displacement of the vibration member, the first vibration generating portion and the second vibration generating portion may be overlapped or stacked to be displaced (or driven or vibrated) in the same direction. For example, the first vibration generating portion and the second vibration generating portion may have substantially the same size, but embodiments of the present disclosure are not limited thereto. A configuration of each of the first vibration generating portion and the second vibration generating portion may be substantially the same as that of the vibration generating portion.

550 According to another embodiment of the present specification, the vibration modulemay include two or more vibration generating portion stacked (or overlapping) to vibrate (or displace or drive) in the same direction, and thus, amount of displacement or amplitude displacement can be maximized or increased. Accordingly, the displacement amount (or bending or driving force) or amplitude displacement of the vibration member may be maximized or increased.

7 FIG. 7 FIG. 1 4 FIGS.to is a cross-sectional view of a vibration apparatus according to another embodiment of the present disclosure.shows that the vibration driving apparatus according to the embodiment of the present disclosure, described with reference to, includes a plurality of vibration modules and a plurality of spring members. Other configurations, except for the plurality of vibration modules and the plurality of spring members, are substantially the same as those of the embodiment of the present disclosure. Accordingly, hereinafter, the same reference numerals will be used for substantially identical configurations, and redundant explanations will be briefly described or omitted.

7 FIG. 10 550 10 550 1 550 2 Referring to, a vibration driving apparatusaccording to another embodiment of the present disclosure may include a plurality of vibration modules. For example, the vibration driving apparatusmay include a first vibration module-and a second vibration module-.

550 1 550 2 100 510 550 1 550 2 100 511 510 550 1 550 2 100 100 550 1 550 2 510 550 1 100 100 511 550 2 100 100 511 550 1 550 2 511 512 514 515 550 1 550 2 500 a a a 1 4 FIGS.to According to another embodiment of the present disclosure, each of the first vibration module-and the second vibration module-may be provided between the vibration memberand the sound generating module. Each of the first vibration module-and the second vibration module-may be provided between the vibration memberand the base plateof the sound generating module. Each of the first vibration module-and the second vibration module-may be connected to the rear surface or the first surfaceof the vibration member. The first vibration module-and the second vibration module-may be connected to the sound generating module. According to another embodiment of the present disclosure, the first vibration module-may be provided on the rear surface of the vibration memberor between the first surfaceand one side of the base plate. The second vibration module-may be provided on the rear surface of the vibration memberor between the first surfaceand the other side opposite to one side of the base plate. Each of the first vibration module-and the second vibration module-may be configured on one side and the other side of the base plateto be spaced apart from the magnet, the bobbin, and the coil. Each of the first vibration module-and the second vibration module-may have the same configuration as the vibration moduledescribed with reference to.

420 100 550 1 100 550 2 550 1 100 420 550 2 100 420 A second adhesive membermay be configured between the vibration memberand the first vibration module-and between the vibration memberand the second vibration module-. For example, the first vibration module-may be connected to the vibration membervia a second adhesive member. For example, the second vibration module-may be connected to the vibration membervia a second adhesive member.

500 570 570 550 1 550 2 570 570 1 570 2 According to another embodiment of the present disclosure, the vibration apparatusmay include a plurality of spring members. Each of a plurality of spring membersmay be disposed to correspond to the first vibration module-and the second vibration module-. A plurality of spring membersmay include a first spring member-and a second spring member-.

570 1 550 1 510 570 1 550 1 511 570 1 550 1 550 1 511 570 1 550 1 550 1 100 570 1 550 1 511 430 550 1 570 1 550 1 570 1 430 440 510 511 570 1 510 511 570 1 440 The first spring member-may be provided between the first vibration module-and the sound generating module. The first spring member-may be provided on a rear surface of the first vibration module-and an upper surface of one side of the base plate. The first spring member-may support the first vibration module-between the rear surface of the first vibration module-and one side of the base plate. The first spring member-may guide the traveling direction of the first vibration module-so that the first vibration module-is easily attached to the vibration memberby the elastic force of the first spring member-between the rear surface of the first vibration module-and one side of the base plate. A third adhesive membermay be provided between a rear surface of the first vibration module-and an upper end of the first spring member-. The first vibration module-and the first spring member-may be connected via a third adhesive member. A fourth adhesive membermay be provided between an upper surface of the sound generating moduleor the base plateand a lower end of the first spring member-. The upper surface of the sound generating moduleor the base plateand the first spring member-may be connected to each other via a fourth adhesive member.

570 2 550 2 510 570 2 550 2 511 570 2 550 2 550 2 511 570 2 550 2 550 2 100 570 2 550 2 511 430 550 2 570 2 550 2 570 2 430 440 510 511 570 2 510 511 570 2 430 570 1 570 2 570 1 4 FIGS.to The second spring member-may be provided between the second vibration module-and the sound generating module. The second spring member-may be provided on the rear surface of the second vibration module-and the upper surface of the other side of the base plate. The second spring member-may support the second vibration module-between the rear surface of the second vibration module-and the other side of the base plate. The second spring member-may guide the traveling direction of the second vibration module-so that the second vibration module-is easily attached to the vibration memberby the elastic force of the second spring member-between the rear surface of the second vibration module-and the other side of the base plate. A third adhesive membermay be provided between the rear surface of the second vibration module-and the upper end of the second spring member-. The second vibration module-and the second spring member-may be connected to each other via a third adhesive member. A fourth adhesive membermay be provided between an upper surface of the sound generating moduleor the base plateand a lower end of the second spring member-. The upper surface of the sound generating moduleor the base plateand the second spring member-may be connected to each other via a fourth adhesive member. Each of the first spring member-and the second spring member-according to another embodiment of the present disclosure may have the same structure and material as those of the spring memberdescribed with reference to.

10 The vibration driving apparatusaccording to another embodiment of the present disclosure may implement the same effect as the embodiment of the present disclosure.

10 500 510 550 According to another embodiment of the present disclosure, the vibration driving apparatusincludes a vibration apparatusin which a sound generating moduleand a plurality of vibration modulesare integrated, thereby further improving the acoustic characteristics and/or sound pressure characteristics of the mid and low ranges.

10 570 550 550 100 511 In addition, the vibration driving apparatusaccording to the embodiment of the present disclosure includes a plurality of spring membersconnected to each of the plurality of vibration modules, so that the vibration modulemay be more easily connected to the rear surface of the vibration memberand the base plate.

8 FIG. 8 FIG. 4 FIG. is a cross-sectional view of a vibration apparatus according to another embodiment of the present disclosure.shows that a configuration of a guide member is added to the vibration driving apparatus according to an embodiment of the present disclosure described with reference to. Other configurations, except for the guide member, are substantially the same as those of the embodiment of the present disclosure. Accordingly, hereinafter, the same reference numerals will be used for substantially identical configurations, and redundant explanations will be briefly described or omitted.

8 FIG. 500 590 590 550 570 590 590 550 430 590 570 590 591 592 593 595 Referring to, a vibration apparatusaccording to another embodiment of the present disclosure may further include a guide member. The guide membermay be connected to the vibration moduleto guide the spring member. The guide membermay have a ‘T’ shape. The guide membermay be connected to the rear surface of the vibration modulevia a third adhesive member. The guide membermay be inserted into the spring member. The guide membermay include a guide support portion, a guide portion, a protrusion portion, and a fastening portion.

591 550 550 591 592 592 591 550 3 591 1 550 591 550 The guide support portionmay be connected to the rear surface of the vibration moduleto support the rear surface of the vibration module. The guide support portionmay have a plate shape extending from the guide portionand horizontally protruding to the outer periphery of the guide portion. The guide support portionmay have a size equal to or smaller than that of the vibration module. For example, the width Wof the guide support portionmay be equal to or smaller than the width Wof the vibration module, but the present disclosure is not limited thereto. For example, the guide support portionmay have a size equal to or less than 90% of the vibration module.

592 591 570 592 591 570 592 570 592 The guide portionis connected to the guide support portionand may guide compression and restoration of the spring member. The guide portionmay extend vertically from a center of the guide support portion. The spring membermay be disposed on the guide portion. The spring membermay be wound on the guide portion.

593 592 511 511 511 593 The protrusion portionmay extend from the guide portionto penetrate one side of the base plateand protrude outward from the base plate. For example, one side of the base platemay be configured with an insertion hole into which the protrusion portionis inserted.

595 593 590 510 593 595 590 511 593 595 595 590 The fastening portionmay be fastened to the protruding portion. The guide membermay be connected to or fixed to the sound generating moduleby the protruding portionand the fastening portion. The guide membermay be easily fastened to one side of the base plateby the protruding portionand the fastening portion. For example, the fastening portionmay be a self-clinching nut or a PEM nut, but the embodiment is not limited thereto. For example, the guide membermay be made of a metal material such as SUS or aluminum (Al).

100 500 300 570 593 511 595 593 100 500 300 For example, when the vibration member, the vibration apparatus, and the cover memberare connected, the spring memberis compressed, and the protrusion portionmay protrude from an insertion hole formed at one side of the base plate. The fastening portionis fastened to the protruding protrusion portion, and thus, the vibration member, the vibration device, and the cover membermay be easily connected.

10 590 570 510 10 590 550 510 Accordingly, the vibration driving apparatusaccording to another embodiment of the present disclosure includes a guide member, so that the spring membermay be prevented from vibrating by vibration when the sound generation modulevibrates up and down. Accordingly, the vibration driving apparatusaccording to another embodiment of the present disclosure includes a guide member, and thus, mutual interference between the vibration moduleand the sound generation modulemay be further prevented.

590 550 590 590 550 590 590 550 550 According to another embodiment of the present disclosure, the guide membermay include the same material as the vibration module. For example, the guide membermay include a piezoelectric material including a piezoelectric effect, a composite piezoelectric material, or an electroactive material. Accordingly, the guide membermay have the same rigidity as that of the vibration module. Accordingly, the guide memberdoes not add an additional manufacturing process, and work efficiency may be improved. In addition, the guide memberhas the same rigidity as that of the vibration module, and thus, the frequency of the vibration modulemay be easily controlled.

10 The vibration driving apparatusaccording to another embodiment of the present disclosure may implement the same effect as the embodiment of the present disclosure.

10 570 590 550 510 According to another embodiment of the present disclosure, the vibration driving apparatusincludes a spring memberand a guide member, and thus, the vibration modulemay be more easily integrated with the sound generating module.

10 570 590 550 100 100 a According to another embodiment of the present disclosure, the vibration driving apparatusincludes a spring memberand a guide member, and thus, the vibration modulemay be more easily connected to the first surfaceof the vibration member.

10 570 590 550 500 570 590 570 590 7 FIG. In another embodiment of the present disclosure, the vibration driving apparatusaccording to the present disclosure is described as an example in which one spring memberand one guide memberare configured in one vibration module, but the present disclosure is not limited thereto. For example, the vibration modulemay include a first vibration module and a second vibration module as shown in. For example, the spring memberand the guide membermay be configured in the first vibration module and the second vibration module, respectively. The spring memberand the guide memberconfigured in each of the first vibration module and the second vibration module include the same material, and may have the same configuration and effect.

9 FIG. 9 FIG. 8 FIG. is a cross-sectional view of a vibration apparatus according to another embodiment of the present disclosure.shows that a dummy plate configuration is added to the vibration driving apparatus according to an embodiment of the present disclosure described with reference to. Other configurations, except for the dummy plate, are substantially the same as those of the embodiment of the present disclosure. Accordingly, hereinafter, the same reference numerals will be used for substantially identical configurations, and redundant explanations will be briefly described or omitted.

9 FIG. 500 560 560 100 550 560 100 100 450 560 550 420 a Referring to, a vibration apparatusaccording to another embodiment of the present disclosure may further include a dummy plate. The dummy platemay be disposed between the vibration memberand the vibration module. The dummy platemay be adhered to the first surfaceof the vibration membervia a fifth adhesive member. The dummy platemay be adhered to the upper surface of the vibration modulevia a second adhesive member.

560 550 4 560 1 500 560 550 560 550 560 560 560 560 560 According to an embodiment of the present disclosure, the dummy platemay have a size equal to or larger than that of the vibration module. For example, a width Wof the dummy platemay be equal to or greater than a width Wof the vibration module. For another example, the dummy platemay have a size smaller than that of the vibration module. For example, the dummy platemay have a size of 80% to 120% of the vibration module. The dummy platemay include a metal material or a plastic material. A metal material of the dummy platemay include at least one of stainless steel, copper (Cu), a copper (Cu) alloy, a tungsten (W), a tungsten (W) alloy, an aluminum (Al), an aluminum (Al) alloy, a magnesium (Mg), a magnesium (Mg) alloy, and a magnesium lithium (Mg—Li) alloy, but embodiments of the present disclosure are not limited thereto. For example, the dummy platemay be made of an aluminum metal material or a plastic or styrene material, but embodiments of the present disclosure are not limited thereto. For example, the styrene material may be an ABS material. The ABS material may be acrylonitrile, butadiene, and styrene. For example, the dummy platemay be carbon fiber reinforced plastic CFRP, polypropylene, polycarbonate, or the like, but embodiments of the present disclosure are not limited thereto. For example, the dummy platemay be a dummy plate, an auxiliary member, an auxiliary plate, a high-pitched reinforced member, or a high-pitched reinforced plate, but embodiments of the present disclosure are not limited thereto.

100 560 10 100 According to another embodiment of the present disclosure, the rigidity of the vibration membermay be increased by additionally configuring the dummy plate. Accordingly, in the vibration driving apparatusaccording to another embodiment of the present disclosure, the rigidity of the vibration memberis increased, and thus, the vertical amplitude of the vibration may be improved. Accordingly, the acoustic characteristics and/or sound pressure characteristics in the high-pitched range may be further improved.

The features of the vibration driving apparatus according to an embodiment of the present disclosure are briefly summarized as follows.

According to one or more embodiments of the present disclosure, a vibration driving apparatus may comprise a vibration member, and a vibration apparatus configured to vibrate the vibration member. The vibration apparatus may include a sound generating module, a vibration module connected to the sound generating module, and a spring member between the sound generating module and the vibration module.

According to one or more embodiments of the present disclosure, each of the sound generating module and the vibration module may be connected to the first surface of the vibration member.

According to one or more embodiments of the present disclosure, the spring member may connect the sound generating module to the vibration module.

According to one or more embodiments of the present disclosure, a width of the spring member may be smaller than a width of the vibration module.

According to one or more embodiments of the present disclosure, the spring member may have a spring constant of 50 N/m or less.

According to one or more embodiments of the present disclosure, the sound generating module may include a coil-type sound generating module.

According to one or more embodiments of the present disclosure, the vibration module may include a piezoelectric material.

According to one or more embodiments of the present disclosure, the vibration driving apparatus may further comprise a first adhesive member that adheres to the vibration member and the sound generating module, a second adhesive member that adheres to the vibration member and the vibration module, a third adhesive member that adheres to the vibration module and the spring member, and a fourth adhesive member that adheres to the spring member and the sound generating module.

According to one or more embodiments of the present disclosure, the sound generating module may include a base plate, a magnet on the base plate, a bobbin surrounding the magnet, and a coil wound around the bobbin. The vibration module may be configured between the vibration member and the base plate.

According to one or more embodiments of the present disclosure, the spring member may be configured between the vibration module and the base plate.

According to one or more embodiments of the present disclosure, the vibration module and the spring member may be configured at one side of the base plate to be spaced apart from the magnet, the bobbin, and the coil.

According to one or more embodiments of the present disclosure, the vibration module may include a first vibration module configured on one side of the base plate to be spaced apart from the magnet, the bobbin, and the coil, and a second vibration module configured on the other side of the base plate to be spaced apart from the magnet, the bobbin, and the coil.

According to one or more embodiments of the present disclosure, the spring member may include a first spring member connected to the first vibration module and configured on one side of the base plate to be spaced apart from the magnet, the bobbin, and the coil, and a second spring member connected to the second vibration module and configured on the other side of the base plate to be spaced apart from the magnet, the bobbin, and the coil. With respect to this paragraph, the preceding four paragraphs, and similar contexts elsewhere, in one or more examples, the term “configured on” may refer to “configured at,” and the term “configured” may refer to “arranged,” “disposed,” “placed,” “located,” “positioned,” or the like.

According to one or more embodiments of the present disclosure, the vibration driving apparatus may further comprise a guide member connected to the vibration module to guide the spring member. The guide member may include the same material as the vibration module.

According to one or more embodiments of the present disclosure, the guide member may include a guide support portion that supports a rear surface of the vibration module, a guide portion that is connected to the guide support portion and guides the spring member, a protruding portion extending from the guide portion, penetrating the base plate, and protruding outside the base plate, and a fastening portion fastened to the protrusion portion.

According to one or more embodiments of the present disclosure, the spring member may be wound around the guide portion.

According to one or more embodiments of the present disclosure, the vibration module may include a vibration layer including piezoelectric materials, a first electrode layer on a first surface of the vibration layer, and a second electrode layer on a second surface different from the first surface of the vibration layer.

According to one or more embodiments of the present disclosure, the vibration driving apparatus may further comprise a dummy plate between the vibration member and the vibration module.

According to one or more embodiments of the present disclosure, the dummy plate may have a size equal to or larger than a size of the vibration module.

According to one or more embodiments of the present disclosure, the vibration apparatus may include a first vibration apparatus and a second vibration apparatus disposed parallel to each other on a first surface of the vibration member. The first vibration apparatus and the second vibration apparatus may be the same vibration apparatus.

The above-described feature, structure, and effect of the present disclosure are included in at least one embodiment of the present disclosure, but are not limited to only one embodiment. Furthermore, the feature, structure, and effect described in at least one embodiment of the present disclosure can be implemented through combination or modification of other embodiments by those skilled in the art. Therefore, content associated with the combination and modification should be construed as being within the scope of the present disclosure.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present disclosure without departing from the spirit or scope of the disclosures. Thus, it is intended that the present disclosure covers the modifications and variations of this disclosure provided they come within the scope of the present disclosure. The scope of protection of the present disclosure should be construed based on the following claims, and all technical features within the scope of equivalents thereof should be construed as being included within the scope of the present disclosure.